AD 90-02-07

90-02-07 AEROSPATIALE: Amendment 39-6466. Docket No. 89-NM-266-AD.

Applicability: Model ATR42 series airplanes, Serial Numbers 003 through 100, certificated in any category.

Compliance: Required within 30 days after the effective date of this AD, unless previously accomplished; and thereafter, compliance is required immediately following any maintenance action which could result in mis-wiring and/or mis-plumbing.

To detect incorrectly installed fire protection system plumbing and/or wiring, accomplish the following:

A. Conduct an inspection of the right engine fire extinguishing system wiring and plumbing in accordance with the Aerospatiale All Operators Information Message DS/E 20/89, dated December 4, 1989. If any pipes or electrical connectors are improperly installed, prior to further flight, correct the installation in accordance with the Aerospatiale message.

B. An alternate means of compliance or adjustment of the compliance time, which providesan acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse Cedex 03, France. This information may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington.

This amendment (39-6466, AD 90-02-07) becomes effective on January 23, 1990.